# Top 50 Climate Tech Startups Worldwide by Funding (2026)

> The 50 best-funded climate tech startups worldwide, ranked by total funding raised: $77B combined. With founding year, headquarters and each company's rounds.

Source: https://millionrounds.com/top-lists/climate-tech-startups (Millionrounds; every figure on the page links to its filing or article)

- 1 [**Venture Global** Venture Global is a supplier of home, office, and stationery products.](https://millionrounds.com/company/venture-global) Venture Global is a supplier of home, office, and stationery products. *Founded* 2013 Washington, United States **$10B** last round Jun 2026
- 2 [**Crusoe** Crusoe is an energy-first AI infrastructure company that develops and operates large-scale, AI-optimized data centers powered by clean energy sources.](https://millionrounds.com/company/crusoe) Crusoe is an energy-first AI infrastructure company that develops and operates large-scale, AI-optimized data centers powered by clean energy sources. *Founded* 2018 Denver, United States **$9.9B** last round Sept 2026
- 3 [**Atlas Renewable Energy** Atlas Renewable Energy is a renewable energy company that develops, builds, and operates solar and wind projects.](https://millionrounds.com/company/atlas-renewable-energy) Atlas Renewable Energy is a renewable energy company that develops, builds, and operates solar and wind projects. *Founded* 2017 Miami, United States **$3.1B** last round Apr 2026
- 4 [**SSE**](https://millionrounds.com/company/sse) *Founded* 1998 Perth, United Kingdom **$2.7B** last round Jun 2026
- 5 [**EVgo** EVgo provides fast charging networks for private and public electric vehicles.](https://millionrounds.com/company/evgo) EVgo provides fast charging networks for private and public electric vehicles. *Founded* 2010 Los Angeles, United States **$2.5B** last round Jul 2025
- 6 [**Eni Plenitude** Eni Plenitude supplies energy for homes and institutions.](https://millionrounds.com/company/eni-plenitude) Eni Plenitude supplies energy for homes and institutions. *Founded* 2017 San Donato Milanese, Italy **$2.3B** last round Jun 2025
- 7 [**Base Power**](https://millionrounds.com/company/base-power) *Founded* - United States **$2.2B** last round Aug 2026
- 8 [**Fortescue Future Industries** Fortescue Future Industries is a green energy and product company committed to producing zero-emission hydrogen from renewable sources.](https://millionrounds.com/company/fortescue-future-industries) Fortescue Future Industries is a green energy and product company committed to producing zero-emission hydrogen from renewable sources. *Founded* 2020 East Perth, Australia **$2.0B** last round Oct 2025
- 9 [**Form Energy** Form Energy develops and commercializes a low-cost battery system that can store wind and solar energy for a long duration.](https://millionrounds.com/company/form-energy) Form Energy develops and commercializes a low-cost battery system that can store wind and solar energy for a long duration. *Founded* 2017 Somerville, United States **$2.0B** last round Sept 2026
- 10 [**Commonwealth Fusion Systems**](https://millionrounds.com/company/commonwealth-fusion-systems) *Founded* - United States **$1.9B** last round Jul 2026
- 11 [**SILA**](https://millionrounds.com/company/sila) *Founded* - United States **$1.7B** last round Aug 2026
- 12 [**Stegra** Stegra operates a steel production plant to accelerate the decarbonization of the steel industry using green energy.](https://millionrounds.com/company/stegra) Stegra operates a steel production plant to accelerate the decarbonization of the steel industry using green energy. *Founded* 2020 Stockholm, Sweden **$1.6B** last round Apr 2026
- 13 [**X-energy** X-energy is delivering the next generation of carbon-free energy by reinventing nuclear power.](https://millionrounds.com/company/x-energy) X-energy is delivering the next generation of carbon-free energy by reinventing nuclear power. *Founded* 2009 Rockville, United States **$1.5B** last round May 2026
- 14 [**Dimension Energy**](https://millionrounds.com/company/dimension-energy) *Founded* - United States **$1.5B** last round Aug 2026
- 15 [**Fremantle Seaweed** Fremantle Seaweed is an Australian aquaculture and ocean-technology company located in Western Australia.](https://millionrounds.com/company/fremantle-seaweed) Fremantle Seaweed is an Australian aquaculture and ocean-technology company located in Western Australia. *Founded* - Perth, Australia **$1.4B** last round Dec 2025
- 16 [**Kyoto Fusioneering** Kyoto Fusioneering Ltd.](https://millionrounds.com/company/kyoto-fusioneering) Kyoto Fusioneering Ltd. *Founded* 2019 Chiyoda, Japan **$1.3B** last round Aug 2026
- 17 [**Return**](https://millionrounds.com/company/return) *Founded* - Netherlands **$1.3B** last round Nov 2026
- 18 [**Generate Capital** Generate Capital is an investment and operating platform for sustainable infrastructure.](https://millionrounds.com/company/generate-capital) Generate Capital is an investment and operating platform for sustainable infrastructure. *Founded* 2014 San Francisco, United States **$1.3B** last round Sept 2026
- 19 [**Redwood Materials** Redwood Materials is an American company based in Carson City, Nevada, focused on creating a sustainable supply chain for lithium-ion batteries.](https://millionrounds.com/company/redwood-materials) Redwood Materials is an American company based in Carson City, Nevada, focused on creating a sustainable supply chain for lithium-ion batteries. *Founded* 2017 Carson City, United States **$1.2B** last round Jan 2026
- 20 [**EnergyRe** EnergyRe is at the center of the clean energy future.](https://millionrounds.com/company/energyre) EnergyRe is at the center of the clean energy future. *Founded* 2020 New York, United States **$1.2B** last round Oct 2026
- 21 [**CleanSpark** CleanSpark (Nasdaq: CLSK) is America's Bitcoin MinerTM.](https://millionrounds.com/company/cleanspark) CleanSpark (Nasdaq: CLSK) is America's Bitcoin MinerTM. *Founded* 2014 Henderson, United States **$1.1B** last round Nov 2025
- 22 [**Fervo Energy** Fervo Energy develops clean energy technology to generate carbon-free energy from geothermal systems.](https://millionrounds.com/company/fervo-energy) Fervo Energy develops clean energy technology to generate carbon-free energy from geothermal systems. *Founded* 2017 Houston, United States **$1.1B** last round Sept 2026
- 23 [**Enpal** Enpal is a photovoltaics leasing firm that provides solar power systems for homeowners.](https://millionrounds.com/company/enpal) Enpal is a photovoltaics leasing firm that provides solar power systems for homeowners. *Founded* 2017 Berlin, Germany **$1.0B** last round Oct 2025
- 24 [**SB Energy** SB Energy provides renewable energy at scale, accelerating the global energy transition.](https://millionrounds.com/company/sb-energy) SB Energy provides renewable energy at scale, accelerating the global energy transition. *Founded* 2015 Redwood City, United States **$1.0B** last round Jan 2026
- 25 [**ReNew Power**](https://millionrounds.com/company/renew-power) *Founded* - India **$984M** last round Jul 2019
- 26 [**CuspAI** CuspAI is an innovative artificial intelligence company based in Cambridge, United Kingdom, with additional teams in Amsterdam and Berlin.](https://millionrounds.com/company/cuspai) CuspAI is an innovative artificial intelligence company based in Cambridge, United Kingdom, with additional teams in Amsterdam and Berlin. *Founded* 2024 Cambridge, United Kingdom **$950M** last round Jul 2026
- 27 [**The Appalachian Regional Clean Hydrogen Hub** ARCH2's mission is to provide an interconnected, full value chain H2Hub solution.](https://millionrounds.com/company/the-appalachian-regional-clean-hydrogen-hub) ARCH2's mission is to provide an interconnected, full value chain H2Hub solution. *Founded* - Morgantown, United States **$925M** last round Jul 2024
- 28 [**Solar Landscape** Solar Landscape is an installer and operator of solar energy systems.](https://millionrounds.com/company/solar-landscape) Solar Landscape is an installer and operator of solar energy systems. *Founded* 2012 Asbury Park, United States **$900M** last round Jun 2026
- 29 [**Pacific Fusion** Pacific Fusion was founded in 2023 to deliver commercial fusion energy to power cities, businesses and homes.](https://millionrounds.com/company/pacific-fusion) Pacific Fusion was founded in 2023 to deliver commercial fusion energy to power cities, businesses and homes. *Founded* 1997 Fremont, United States **$900M** last round Nov 2024
- 30 [**Footprint** Footprint is a materials science technology company that designs, develops, and manufactures solutions to replace single-use plastics.](https://millionrounds.com/company/footprint) Footprint is a materials science technology company that designs, develops, and manufactures solutions to replace single-use plastics. *Founded* 2013 Gilbert, United States **$843M** last round May 2024
- 31 [**Blue Energy** Blue Energy is a nuclear energy company that designs and manufactures modular nuclear power plants.](https://millionrounds.com/company/blue-energy) Blue Energy is a nuclear energy company that designs and manufactures modular nuclear power plants. *Founded* - Plainfield, United States **$805M** last round Jul 2026
- 32 [**Scala Data Centers** Scala Data Centers is a scaled hyper-scale data center operator located in Brazil.](https://millionrounds.com/company/scala-data-centers) Scala Data Centers is a scaled hyper-scale data center operator located in Brazil. *Founded* 2020 Barueri, Brazil **$804M** last round Jul 2025
- 33 [**Intersect Power**](https://millionrounds.com/company/intersect-power) *Founded* - United States **$800M** last round Dec 2024
- 34 [**Avantus** Avantus develops large-scale solar and solar-plus-storage projects to drive the adoption of zero-emission energy.](https://millionrounds.com/company/avantus) Avantus develops large-scale solar and solar-plus-storage projects to drive the adoption of zero-emission energy. *Founded* 2019 El Dorado Hills, United States **$800M** last round Sept 2026
- 35 [**Multiverse Computing** Multiverse Computing is a leading quantum AI software company based in San Sebastián, Spain, with additional offices in Canada, the UK, France, Germany, Italy,](https://millionrounds.com/company/multiverse-computing) Multiverse Computing is a leading quantum AI software company based in San Sebastián, Spain, with additional offices in Canada, the UK, France, Germany, Italy, *Founded* 2019 San Sebastian, Spain **$785M** last round Jul 2026
- 36 [**Panamint Capital** Panamint Capital is an energy investment firm that focuses on developing electric transmission and optimizing power generation.](https://millionrounds.com/company/panamint-capital) Panamint Capital is an energy investment firm that focuses on developing electric transmission and optimizing power generation. *Founded* 2019 United States **$769M** last round Nov 2026
- 37 [**Rezolv Energy** Rezolv Energy is an independent power producer and renewable energy developer based in Prague, Czech Republic.](https://millionrounds.com/company/rezolv-energy) Rezolv Energy is an independent power producer and renewable energy developer based in Prague, Czech Republic. *Founded* 2022 Prague, Romania **$763M** last round Nov 2026
- 38 [**XPLR Infrastructure** XPLR Infrastructure is a renewable energy company that owns, operates, and acquires contracted clean energy projects.](https://millionrounds.com/company/xplr-infrastructure) XPLR Infrastructure is a renewable energy company that owns, operates, and acquires contracted clean energy projects. *Founded* - North Palm Beach, United States **$750M** last round Nov 2025
- 39 [**Maxwell Power** Maxwell Power is a renewable energy company that installs solar panels.](https://millionrounds.com/company/maxwell-power) Maxwell Power is a renewable energy company that installs solar panels. *Founded* - San Diego, United States **$750M** last round Jun 2026
- 40 [**BNZ energy** BNZ, an independent power producer (IPP), plans, installs, and runs solar photovoltaic projects.](https://millionrounds.com/company/bnz-energy) BNZ, an independent power producer (IPP), plans, installs, and runs solar photovoltaic projects. *Founded* 2020 Madrid, Spain **$740M** last round Oct 2024
- 41 [**RSK Group** RSK Group is a privately-owned multi-disciplinary environmental consultancy and one of the fastest growing companies.](https://millionrounds.com/company/rsk-group) RSK Group is a privately-owned multi-disciplinary environmental consultancy and one of the fastest growing companies. *Founded* 1989 Helsby, United Kingdom **$705M** last round Sept 2024
- 42 [**Welspun Energy** Welspun Energy focuses on producing solar, thermal and wind energy.](https://millionrounds.com/company/welspun-energy) Welspun Energy focuses on producing solar, thermal and wind energy. *Founded* 2002 New Delhi, India **$690M** last round Oct 2015
- 43 [**Octopus Energy Group** Octopus Energy Group is an England-based holding company that operates businesses in areas such as energy generation and electric vehicle sales.](https://millionrounds.com/company/octopus-energy-group) Octopus Energy Group is an England-based holding company that operates businesses in areas such as energy generation and electric vehicle sales. *Founded* 2016 London, United Kingdom **$681M** last round Dec 2025
- 44 [**Atome Energy** Atome Energy is the green hydrogen and ammonia project development company to create a greener, cleaner environment.](https://millionrounds.com/company/atome-energy) Atome Energy is the green hydrogen and ammonia project development company to create a greener, cleaner environment. *Founded* - Leeds, United Kingdom **$665M** last round Apr 2026
- 45 [**Radial Power** Radial Power provides distributed energy and sustainability solutions to commercial and industrial real estate asset owners.](https://millionrounds.com/company/radial-power) Radial Power provides distributed energy and sustainability solutions to commercial and industrial real estate asset owners. *Founded* 2022 Houston, United States **$660M** last round Jan 2026
- 46 [**Origis Energy** Origis Energy focuses on the development, construction, and operation of solar power plants and energy storage solutions.](https://millionrounds.com/company/origis-energy) Origis Energy focuses on the development, construction, and operation of solar power plants and energy storage solutions. *Founded* 2008 Miami, United States **$651M** last round Jan 2025
- 47 [**rPlus Energies** rPlus Energies builds new power plants to help rebuild America's energy infrastructure.](https://millionrounds.com/company/rplus-energies) rPlus Energies builds new power plants to help rebuild America's energy infrastructure. *Founded* 2018 Salt Lake City, United States **$650M** last round Mar 2026
- 48 [**Proxima Fusion** Proxima Fusion is a European fusion energy company based in Munich, Germany, founded in 2023 as the first spin-out from the Max Planck Institute for Plasma Physics.](https://millionrounds.com/company/proxima-fusion) Proxima Fusion is a European fusion energy company based in Munich, Germany, founded in 2023 as the first spin-out from the Max Planck Institute for Plasma Physics. *Founded* 2023 Munich, Germany **$636M** last round Jul 2026
- 49 [**GIGA Storage** GIGA Storage develops large-scale sustainable energy storage systems.](https://millionrounds.com/company/giga-storage) GIGA Storage develops large-scale sustainable energy storage systems. *Founded* 2018 Amstelveen, Netherlands **$634M** last round Oct 2026
- 50 [**WildFire Energy** Wildfire Energy is an Australian cleantech startup focused on converting residual waste into renewable energy, hydrogen, and sustainable fuels using its proprie](https://millionrounds.com/company/wildfire-energy) Wildfire Energy is an Australian cleantech startup focused on converting residual waste into renewable energy, hydrogen, and sustainable fuels using its proprie *Founded* 2016 Petrie Terrace, United States **$604M** last round Jul 2026

**Total funding** how the list is ranked

**15 November 2026** updated nightly

**Rounds we track** source: Millionrounds

Companies whose funding rounds we classed as any of these sectors, ranked by the total they have raised in rounds we hold. Nobody pays to be on a list.

## Who backed them?

Open any company for its rounds and investors, or search the investors who back climate tech startups worldwide in the app, with filters, lists and exports.

[Find their investors](https://millionrounds.com/login?join=1&next=/app/investors)[All top lists](https://millionrounds.com/top-lists)

## More climate tech lists

[See all](https://millionrounds.com/top-lists?t=Climate%20tech)

[*S* *EP* *S* **Climate tech startups in Europe** 756 companies · $25B](https://millionrounds.com/top-lists/climate-tech-startups-europe)[*VG* *C* *AR* **Climate tech startups in the United States** 720 companies · $62B](https://millionrounds.com/top-lists/climate-tech-startups-united-states)[*S* *C* *RG* **Climate tech startups in the United Kingdom** 256 companies · $11B](https://millionrounds.com/top-lists/climate-tech-startups-united-kingdom)[*E* *GF* *EF* **Climate tech startups in Canada** 126 companies · $2.8B](https://millionrounds.com/top-lists/climate-tech-startups-canada)[*E* *PF* *1* **Climate tech startups in Germany** 92 companies · $5.5B](https://millionrounds.com/top-lists/climate-tech-startups-germany)[*H* *D* *S* **Climate tech startups in France** 86 companies · $1.7B](https://millionrounds.com/top-lists/climate-tech-startups-france)[*R* *GS* *F* **Climate tech startups in the Netherlands** 71 companies · $2.7B](https://millionrounds.com/top-lists/climate-tech-startups-netherlands)[*MC* *BE* *Z* **Climate tech startups in Spain** 34 companies · $2.3B](https://millionrounds.com/top-lists/climate-tech-startups-spain)

## More lists worldwide

[See all](https://millionrounds.com/top-lists?r=Global)

[*GV* *V* *RP* **Health startups worldwide** 12,811 companies · $81B](https://millionrounds.com/top-lists/health-startups)[*O* *A* *X* **AI startups worldwide** 10,238 companies · $830B](https://millionrounds.com/top-lists/ai-startups)[*GV* *V* *RP* **Biotech startups worldwide** 7,127 companies · $70B](https://millionrounds.com/top-lists/biotech-startups)[*D* *B* *FT* **Big data startups worldwide** 3,812 companies · $220B](https://millionrounds.com/top-lists/big-data-startups)[*AF* *R* *S* **Fintech startups worldwide** 3,200 companies · $94B](https://millionrounds.com/top-lists/fintech-startups)[*O* *A* *B* **AI startups that raised in 2026** 2,922 companies · $540B in 2026](https://millionrounds.com/top-lists/ai-startups-raised-2026)[*FT* *CE* *P* **Energy providers startups worldwide** 2,808 companies · $152B](https://millionrounds.com/top-lists/energy-providers-startups)[*A* *P* *O* **Marketing tech startups worldwide** 2,728 companies · $28B](https://millionrounds.com/top-lists/marketing-tech-startups)